the URLs work for me. They are p2 update-site links to be entered in
Eclipse. I started eclipse, select "Help->Install new software" and entered
one of the the links there.
There is no html-content behind these URLs. The mechanism used here is the
new p2 which does not anymore use a site.xml.
I realize Egit uses the new P2 update mechanism. My problem is that I manage a stand alone network (not connected to the internet) and I'd like to add Egit to my existing Eclipse clients. This was easy with the old site.xml, but I'd like to still do it with P2.